When adding a QMenu to a QPushButton, Qt displays a small down-pointing arrow on the right side of the button (depending on the style/theme).
If a stylesheet is used to set a border on the button, the arrow changes its position and size unexpectedly.

This issue can be reproduced with the WindowsVista style.

Steps to reproduce:

1. Open the attached example project.

1. Build and run it.

1. Observe the two buttons:

• • pushButton1 has a border set via stylesheet.

• • pushButton2 does not.

1. Notice that the menu arrow for pushButton1 is shifted and resized compared to pushButton2.

Expected result:
The arrow icon should remain consistent in position and size regardless of whether a border is set via stylesheet.

Actual result:
When a border is applied via stylesheet, the arrow shifts and changes size. (See attached screenshot, made with WindowsVista style.)